#ocpvideopopout-toolbar-button
{
  list-style-image: url("chrome://ocpvideopopout/skin/MainIcon24.png");
  -moz-image-region: rect(0px 24px 24px 0px);
}

[iconsize="small"] #ocpvideopopout-toolbar-button
{
  list-style-image: url("chrome://ocpvideopopout/skin/MainIcon16.png");
  -moz-image-region: rect(0px 16px 16px 0px);
}
